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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_07) on Thu Jun 21 14:48:25 PDT 2007 --><TITLE>ModelUtil (Smack 3.0.4 Documentation)</TITLE><META NAME="keywords" CONTENT="org.jivesoftware.smackx.workgroup.util.ModelUtil class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="ModelUtil (Smack 3.0.4 Documentation)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" 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ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Smack</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../../org/jivesoftware/smackx/workgroup/util/MetaDataUtils.html" title="class in org.jivesoftware.smackx.workgroup.util"><B>PREV CLASS</B></A> NEXT CLASS</FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../../index.html?org/jivesoftware/smackx/workgroup/util/ModelUtil.html" target="_top"><B>FRAMES</B></A> <A HREF="ModelUtil.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.jivesoftware.smackx.workgroup.util</FONT><BR>Class ModelUtil</H2><PRE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A> <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.jivesoftware.smackx.workgroup.util.ModelUtil</B></PRE><HR><DL><DT><PRE>public final class <B>ModelUtil</B><DT>extends <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></DL></PRE><P>Utility methods frequently used by data classes and design-time classes.<P><P><HR><P><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/jivesoftware/smackx/workgroup/util/ModelUtil.html#areBooleansDifferent(java.lang.Boolean, java.lang.Boolean)">areBooleansDifferent</A></B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Boolean.html" title="class or interface in java.lang">Boolean</A> b1, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Boolean.html" title="class or interface in java.lang">Boolean</A> b2)</CODE><BR> This is a utility method that compares two Booleans when one or both of the objects might be <CODE>null</CODE> The result of this method is determined as follows: If <CODE>b1</CODE> and <CODE>b2</CODE> are both TRUE or neither <CODE>b1</CODE> nor <CODE>b2</CODE> is TRUE, return <CODE>false</CODE>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/jivesoftware/smackx/workgroup/util/ModelUtil.html#areBooleansEqual(java.lang.Boolean, java.lang.Boolean)">areBooleansEqual</A></B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Boolean.html" title="class or interface in java.lang">Boolean</A> b1, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Boolean.html" title="class or interface in java.lang">Boolean</A> b2)</CODE><BR> This is a utility method that compares two Booleans when one or both of the objects might be <CODE>null</CODE> The result of this method is determined as follows: If <CODE>b1</CODE> and <CODE>b2</CODE> are both TRUE or neither <CODE>b1</CODE> nor <CODE>b2</CODE> is TRUE, return <CODE>true</CODE>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/jivesoftware/smackx/workgroup/util/ModelUtil.html#areDifferent(java.lang.Object, java.lang.Object)">areDifferent</A></B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> o1, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> o2)</CODE><BR> This is a utility method that compares two objects when one or both of the objects might be <CODE>null</CODE>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/jivesoftware/smackx/workgroup/util/ModelUtil.html#areEqual(java.lang.Object, java.lang.Object)">areEqual</A></B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> o1, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> o2)</CODE><BR> This is a utility method that compares two objects when one or both of the objects might be <CODE>null</CODE> The result of this method is determined as follows: If <CODE>o1</CODE> and <CODE>o2</CODE> are the same object according to the <CODE>==</CODE> operator, return <CODE>true</CODE>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/jivesoftware/smackx/workgroup/util/ModelUtil.html#concat(java.lang.String[])">concat</A></B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>[] strs)</CODE><BR> Returns a single string that is the concatenation of all the strings in the specified string array.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/jivesoftware/smackx/workgroup/util/ModelUtil.html#concat(java.lang.String[], java.lang.String)">concat</A></B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>[] strs, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> delim)</CODE><BR> Returns a single string that is the concatenation of all the strings in the specified string array.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/jivesoftware/smackx/workgroup/util/ModelUtil.html#getTimeFromLong(long)">getTimeFromLong</A></B>(long diff)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/jivesoftware/smackx/workgroup/util/ModelUtil.html#hasLength(java.lang.String)">hasLength</A></B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> s)</CODE>⌨️ 快捷键说明
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